Wednesday, 22 February 2012



Chocolate Science and Technology - This book provides an overview of the science and technology of chocolate manufacture from cocoa production, through the manufacturing processes, to the sensory, nutrition and health aspects of chocolate consumption. It covers cocoa cultivation and production with special attention paid to cocoa bean composition, genotypic variations in the bean, post-harvest pre-treatments, fermentation and drying processes, and the biochemical basis of these operations. The scientific principles behind industrial chocolate manufacture are outlined with detailed explanations of the various stages of chocolate manufacturing including mixing, refining, conching and tempering. Other topics covered include the chemistry of flavour formation and development during cocoa processing and chocolate manufacture; volatile flavour compounds and their characteristics and identification; sensory descriptions and character; and flavour release and perception in chocolate. The nutritional and health benefits of cocoa and chocolate consumption are also addressed. There is a focus throughout on those factors that influence the flavour and quality characteristics of the finished chocolate and that provide scope for process optimization and improvement. The book is designed to be a desk reference for all those engaged in the business of making and using chocolate worldwide; confectionery and chocolate scientists in industry and academia; students and practising food scientists and technologists; nutritionists and other health professionals; and libraries of institutions where food science is studied and researched. an overview of the science behind chocolate manufacture covers the whole process from cocoa production, through manufacturing, to the nutrition and health aspects of chocolate consumption focuses on factors that influence chocolate flavour and quality, and that provide scope for process optimization and improvement.

Lipid Handbook free download, The Lipid Handbook Gunstone ebook free download, Lipid Handbook DOWNLOAD

Extensively revised, reorganized, and expanded, the third edition of the industry standard, The Lipid Handbook reflects many of the changes in lipid science and technology that have occurred in the last decade. All chapters have been rewritten, many by new authors, to match the updated thinking and practice of modern lipid science and bring a fresh perspective to twenty years of tradition.

Retaining the general structure of the previous editions, The Lipid Handbook with CD-ROM, Third Edition collates a wide range of information into a single volume. New contributions highlight the latest technologies utilized in today's lipid science such as chromatographic analysis and nuclear magnetic resonance spectroscopy. An entirely new chapter is devoted to non-food uses such as lipids as surfactants, cosmetics, and biofuels. Expanded sections illustrate a growing emphasis on lipid metabolism and the nutritional, medical, and agricultural aspects including human dietary requirements and disorders of lipid metabolism. The dictionary section is vastly expanded to cover chemical structure, physical properties, and references to thousands of lipid and lipid related molecules. The handbook now includes a CD-ROM that allows instant access to tabulated and referenced information and can be searched either as the full text or by structure or substructure.

Saturday, 18 February 2012

Jurnal Praktikum Mikrobiologi
  1. Seperti biasa, apakah tujuan dari praktikum kali ini ?
    1. Mahasiswa mampu melakukan penyiapan media untuk disterilisasi
    2. Mahasiswa mampu melakukan sterilisasi media
    3. Mahasiswa mampu melakukan penuangan media agar pada cawan petri dan melakukan pembuatan media agar miring
  1. Sebutkan macam-macam media pembiakan bakteri ?
    Berdasarkan ada tidaknya penambahan zat pemadat seperti agar-agar, gelatin , maka dikenal 3 bentuk media, yaitu
    • media padat untuk mengamati morfologi koloni dan mengisolasi biakan murni(Contoh : Nutrient Agar, Mac Conkey Agar), 
    • media semi padat : untuk menumbuhkan mikroba yang memerlukan sedikit air dan hidup anaerobik atau fakultatif. Media semi solid dibuat dengan tujuan supaya pertumbuhan mikroba dapat menyebar ke seluruh media tetapi tidak mengalami percampuran sempurna jika tergoyang. (semisolid), dan 
    • media cair untuk membuat biakan dalam jumlah besar, penelaahan fermentasi dan berbagai macam uji(Contoh : Lactose Broth, Nutrient Broth).

Tuesday, 14 February 2012

Soal Tes Jurnal Praktikum Mikrobiologi

  1. Seperti biasa, pada no 1 selalu ditanyakan apa tujuan dari praktikum kali ini ?
  2. 1. Mahasiswa mampu melakukan penyiapan olesan bakteri dengan baik sebagai prasyarat macam pewarnaan
     2. Mahasiswa mampu melakukan pewarnaan gram 
    3. Mahasiswa mampu melakukan pengamatan bakteri dengan menggunakan mikroskop
  1. Olesan yang baik itu yang seperti apa ?
  2. Olesan yang baik adalah olesan yang tidak terlalu tebal dan tidak terlalu tipis. Jika terlalu tebal, maka akan terjadi penumpukan mikroba, sehingga akan sulit diamati. Jika terlalu tipis juga akan sulit diamati karena bentuknya tidak jelas.

Saturday, 11 February 2012


Latar Belakang Adanya Pengecatan / Pewarnaan Mikroorganisme dan Fungsi Pewarnaan Bakteri/ Mikroogranisme

Mikroorganisme yang ada di alam ini mempunyai morfologi, struktur dan sifat-sifat yang khas, termasuk bakteri. Bakteri yang hidup hampir tidak berwarna dan kontras dengan air. Untuk melihat dan mengamati bentuk sel bakteri  dalam keadaan hidup sangat sulit, sehingga untuk mengidentifikasinya dilakukan dengan metode pengecatan atau pewarnaan sel bekteri, sehingga sel dapat terlihat jelas dan mudah diamati. Hal tersebut juga berfungsi untuk mengetahui sifat fisiologisnya yaitu mengetahui reaksi dinding sel bakteri melalui serangkaian pengecatan. Oleh karena itu teknik pewarnaan sel bakteri ini merupakan salah satu cara yang paling utama dalam penelitian-penelitian mikrobiologi.

Gambar 1. Pewarnaan Spora